Magnetic recording medium comprising a non magnetic underlayer a

Details Magnetic recording medium comprising a non magnetic underlayer a Magnetic recording medium comprising a non magnetic underlayer a

1993-11-08

1995-04-11

Resan, Stevan A.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428213, 428215, 428323, 428694BM, 428694BS, 428900, G11B 500

Patent

active

054056799

ABSTRACT:
A magnetic recording medium is disclosed, which comprises a no-magnetic support having thereon, at least two magnetic layer including a first magnetic layer provided at the farthest position from the support, and a second magnetic layer provided between the first magnetic layer and the support, and a non-magnetic layer provided between the second magnetic layer and the support. In the above, at least one of the magnetic layers comprises a ferromagnetic metal powder. The magnetic layers have a thickness of not thicker than 0.3 .mu.m in total, and the non-magnetic layer has a thickness within the range of from, 0.2 .mu.m to 2.0 .mu.m.

REFERENCES:
patent: 4963433 (1990-10-01), Ogawa et al.
patent: 5156908 (1992-10-01), Araki et al.
patent: 5268206 (1993-12-01), Komatsu et al.

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